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98b19569
编写于
9月 19, 2019
作者:
G
guozhanxin
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
[usbd] Add usb audio class.
上级
cde81a29
变更
5
隐藏空白更改
内联
并排
Showing
5 changed file
with
1841 addition
and
0 deletion
+1841
-0
components/drivers/Kconfig
components/drivers/Kconfig
+24
-0
components/drivers/usb/usbdevice/SConscript
components/drivers/usb/usbdevice/SConscript
+6
-0
components/drivers/usb/usbdevice/class/audio.h
components/drivers/usb/usbdevice/class/audio.h
+676
-0
components/drivers/usb/usbdevice/class/audio_mic.c
components/drivers/usb/usbdevice/class/audio_mic.c
+567
-0
components/drivers/usb/usbdevice/class/audio_speaker.c
components/drivers/usb/usbdevice/class/audio_speaker.c
+568
-0
未找到文件。
components/drivers/Kconfig
浏览文件 @
98b19569
...
...
@@ -660,6 +660,9 @@ menu "Using USB"
config _RT_USB_DEVICE_WINUSB
bool "Enable to use device as winusb device"
select RT_USB_DEVICE_WINUSB
config _RT_USB_DEVICE_AUDIO
bool "Enable to use device as audio device"
select RT_USB_DEVICE_AUDIO
endchoice
if RT_USB_DEVICE_COMPOSITE
config RT_USB_DEVICE_CDC
...
...
@@ -685,6 +688,9 @@ menu "Using USB"
config RT_USB_DEVICE_WINUSB
bool "Enable to use device as winusb device"
default n
config RT_USB_DEVICE_AUDIO
bool "Enable to use device as audio device"
default n
endif
if RT_USB_DEVICE_CDC
config RT_VCOM_TASK_STK_SIZE
...
...
@@ -752,6 +758,24 @@ menu "Using USB"
bool "Use to HID device as media keyboard"
default y
endif
if RT_USB_DEVICE_AUDIO
config RT_USB_DEVICE_AUDIO_MIC
bool "Use usb mic device as audio device"
default n
if RT_USB_DEVICE_AUDIO_MIC
config RT_USBD_MIC_DEVICE_NAME
string "audio mic device name"
default "mic0"
endif
config RT_USB_DEVICE_AUDIO_SPEAKER
bool "Use usb speaker device as audio device"
default n
if RT_USB_DEVICE_AUDIO_SPEAKER
config RT_USBD_SPEAKER_DEVICE_NAME
string "audio speaker device name"
default "sound0"
endif
endif
endif
endmenu
endmenu
components/drivers/usb/usbdevice/SConscript
浏览文件 @
98b19569
...
...
@@ -24,6 +24,12 @@ if GetDepend('RT_USB_DEVICE_RNDIS'):
if
GetDepend
(
'RT_USB_DEVICE_WINUSB'
):
src
+=
Glob
(
'class/winusb.c'
)
if
GetDepend
(
'RT_USB_DEVICE_AUDIO_MIC'
):
src
+=
Glob
(
'class/audio_mic.c'
)
if
GetDepend
(
'RT_USB_DEVICE_AUDIO_SPEAKER'
):
src
+=
Glob
(
'class/audio_speaker.c'
)
CPPPATH
=
[
cwd
]
...
...
components/drivers/usb/usbdevice/class/audio.h
0 → 100644
浏览文件 @
98b19569
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* <linux/usb/audio.h> -- USB Audio definitions.
*
* Copyright (C) 2006 Thumtronics Pty Ltd.
* Developed for Thumtronics by Grey Innovation
* Ben Williamson <ben.williamson@greyinnovation.com>
*
* This software is distributed under the terms of the GNU General Public
* License ("GPL") version 2, as published by the Free Software Foundation.
*
* This file holds USB constants and structures defined
* by the USB Device Class Definition for Audio Devices.
* Comments below reference relevant sections of that document:
*
* http://www.usb.org/developers/devclass_docs/audio10.pdf
*
* Types and defines in this file are either specific to version 1.0 of
* this standard or common for newer versions.
*/
#ifndef _UAPI__LINUX_USB_AUDIO_H
#define _UAPI__LINUX_USB_AUDIO_H
//#include <linux/types.h>
#include <rtthread.h>
typedef
int8_t
__s8
;
typedef
uint8_t
__u8
;
typedef
int16_t
__s16
;
typedef
uint16_t
__u16
;
typedef
int32_t
__s32
;
typedef
uint32_t
__u32
;
typedef
int64_t
__s64
;
typedef
uint64_t
__u64
;
#define UAC_USE_FEATURE_UNIT 0
/* Feature unit does not support */
/*
* Below are truly Linux-specific types that should never collide with
* any application/library that wants linux/types.h.
*/
#ifdef __CHECKER__
#define __bitwise__ __attribute__((bitwise))
#else
#define __bitwise__
#endif
#ifdef __CHECK_ENDIAN__
#define __bitwise __bitwise__
#else
#define __bitwise
#endif
typedef
__u16
__bitwise
__le16
;
typedef
__u16
__bitwise
__be16
;
typedef
__u32
__bitwise
__le32
;
typedef
__u32
__bitwise
__be32
;
typedef
__u64
__bitwise
__le64
;
typedef
__u64
__bitwise
__be64
;
typedef
__u16
__bitwise
__sum16
;
typedef
__u32
__bitwise
__wsum
;
/* bInterfaceProtocol values to denote the version of the standard used */
#define UAC_VERSION_1 0x00
#define UAC_VERSION_2 0x20
#define UAC_VERSION_3 0x30
/* A.2 Audio Interface Subclass Codes */
#define USB_SUBCLASS_AUDIOCONTROL 0x01
#define USB_SUBCLASS_AUDIOSTREAMING 0x02
#define USB_SUBCLASS_MIDISTREAMING 0x03
/* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
#define UAC_HEADER 0x01
#define UAC_INPUT_TERMINAL 0x02
#define UAC_OUTPUT_TERMINAL 0x03
#define UAC_MIXER_UNIT 0x04
#define UAC_SELECTOR_UNIT 0x05
#define UAC_FEATURE_UNIT 0x06
#define UAC1_PROCESSING_UNIT 0x07
#define UAC1_EXTENSION_UNIT 0x08
/* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
#define UAC_AS_GENERAL 0x01
#define UAC_FORMAT_TYPE 0x02
#define UAC_FORMAT_SPECIFIC 0x03
/* A.7 Processing Unit Process Types */
#define UAC_PROCESS_UNDEFINED 0x00
#define UAC_PROCESS_UP_DOWNMIX 0x01
#define UAC_PROCESS_DOLBY_PROLOGIC 0x02
#define UAC_PROCESS_STEREO_EXTENDER 0x03
#define UAC_PROCESS_REVERB 0x04
#define UAC_PROCESS_CHORUS 0x05
#define UAC_PROCESS_DYN_RANGE_COMP 0x06
/* A.8 Audio Class-Specific Endpoint Descriptor Subtypes */
#define UAC_EP_GENERAL 0x01
/* A.9 Audio Class-Specific Request Codes */
#define UAC_SET_ 0x00
#define UAC_GET_ 0x80
#define UAC__CUR 0x1
#define UAC__MIN 0x2
#define UAC__MAX 0x3
#define UAC__RES 0x4
#define UAC__MEM 0x5
#define UAC_SET_CUR (UAC_SET_ | UAC__CUR)
#define UAC_GET_CUR (UAC_GET_ | UAC__CUR)
#define UAC_SET_MIN (UAC_SET_ | UAC__MIN)
#define UAC_GET_MIN (UAC_GET_ | UAC__MIN)
#define UAC_SET_MAX (UAC_SET_ | UAC__MAX)
#define UAC_GET_MAX (UAC_GET_ | UAC__MAX)
#define UAC_SET_RES (UAC_SET_ | UAC__RES)
#define UAC_GET_RES (UAC_GET_ | UAC__RES)
#define UAC_SET_MEM (UAC_SET_ | UAC__MEM)
#define UAC_GET_MEM (UAC_GET_ | UAC__MEM)
#define UAC_GET_STAT 0xff
/* A.10 Control Selector Codes */
/* A.10.1 Terminal Control Selectors */
#define UAC_TERM_COPY_PROTECT 0x01
/* A.10.2 Feature Unit Control Selectors */
#define UAC_FU_MUTE 0x01
#define UAC_FU_VOLUME 0x02
#define UAC_FU_BASS 0x03
#define UAC_FU_MID 0x04
#define UAC_FU_TREBLE 0x05
#define UAC_FU_GRAPHIC_EQUALIZER 0x06
#define UAC_FU_AUTOMATIC_GAIN 0x07
#define UAC_FU_DELAY 0x08
#define UAC_FU_BASS_BOOST 0x09
#define UAC_FU_LOUDNESS 0x0a
#define UAC_CONTROL_BIT(CS) (1 << ((CS) - 1))
/* A.10.3.1 Up/Down-mix Processing Unit Controls Selectors */
#define UAC_UD_ENABLE 0x01
#define UAC_UD_MODE_SELECT 0x02
/* A.10.3.2 Dolby Prologic (tm) Processing Unit Controls Selectors */
#define UAC_DP_ENABLE 0x01
#define UAC_DP_MODE_SELECT 0x02
/* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */
#define UAC_3D_ENABLE 0x01
#define UAC_3D_SPACE 0x02
/* A.10.3.4 Reverberation Processing Unit Control Selectors */
#define UAC_REVERB_ENABLE 0x01
#define UAC_REVERB_LEVEL 0x02
#define UAC_REVERB_TIME 0x03
#define UAC_REVERB_FEEDBACK 0x04
/* A.10.3.5 Chorus Processing Unit Control Selectors */
#define UAC_CHORUS_ENABLE 0x01
#define UAC_CHORUS_LEVEL 0x02
#define UAC_CHORUS_RATE 0x03
#define UAC_CHORUS_DEPTH 0x04
/* A.10.3.6 Dynamic Range Compressor Unit Control Selectors */
#define UAC_DCR_ENABLE 0x01
#define UAC_DCR_RATE 0x02
#define UAC_DCR_MAXAMPL 0x03
#define UAC_DCR_THRESHOLD 0x04
#define UAC_DCR_ATTACK_TIME 0x05
#define UAC_DCR_RELEASE_TIME 0x06
/* A.10.4 Extension Unit Control Selectors */
#define UAC_XU_ENABLE 0x01
/* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
#define UAC_MS_HEADER 0x01
#define UAC_MIDI_IN_JACK 0x02
#define UAC_MIDI_OUT_JACK 0x03
/* MIDI - A.1 MS Class-Specific Endpoint Descriptor Subtypes */
#define UAC_MS_GENERAL 0x01
/* Terminals - 2.1 USB Terminal Types */
#define UAC_TERMINAL_UNDEFINED 0x100
#define UAC_TERMINAL_STREAMING 0x101
#define UAC_TERMINAL_VENDOR_SPEC 0x1FF
/* Terminal Control Selectors */
/* 4.3.2 Class-Specific AC Interface Descriptor */
struct
uac1_ac_header_descriptor
{
__u8
bLength
;
/* 8 + n */
__u8
bDescriptorType
;
/* USB_DT_CS_INTERFACE */
__u8
bDescriptorSubtype
;
/* UAC_MS_HEADER */
__le16
bcdADC
;
/* 0x0100 */
__le16
wTotalLength
;
/* includes Unit and Terminal desc. */
__u8
bInCollection
;
/* n */
__u8
baInterfaceNr
[];
/* [n] */
}
__attribute__
((
packed
));
#define UAC_DT_AC_HEADER_SIZE(n) (8 + (n))
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \
struct uac1_ac_header_descriptor_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__le16 bcdADC; \
__le16 wTotalLength; \
__u8 bInCollection; \
__u8 baInterfaceNr[n]; \
} __attribute__ ((packed))
/* 4.3.2.1 Input Terminal Descriptor */
struct
uac_input_terminal_descriptor
{
__u8
bLength
;
/* in bytes: 12 */
__u8
bDescriptorType
;
/* CS_INTERFACE descriptor type */
__u8
bDescriptorSubtype
;
/* INPUT_TERMINAL descriptor subtype */
__u8
bTerminalID
;
/* Constant uniquely terminal ID */
__le16
wTerminalType
;
/* USB Audio Terminal Types */
__u8
bAssocTerminal
;
/* ID of the Output Terminal associated */
__u8
bNrChannels
;
/* Number of logical output channels */
__le16
wChannelConfig
;
__u8
iChannelNames
;
__u8
iTerminal
;
}
__attribute__
((
packed
));
#define UAC_DT_INPUT_TERMINAL_SIZE 12
/* Terminals - 2.2 Input Terminal Types */
#define UAC_INPUT_TERMINAL_UNDEFINED 0x200
#define UAC_INPUT_TERMINAL_MICROPHONE 0x201
#define UAC_INPUT_TERMINAL_DESKTOP_MICROPHONE 0x202
#define UAC_INPUT_TERMINAL_PERSONAL_MICROPHONE 0x203
#define UAC_INPUT_TERMINAL_OMNI_DIR_MICROPHONE 0x204
#define UAC_INPUT_TERMINAL_MICROPHONE_ARRAY 0x205
#define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206
/* Terminals - control selectors */
#define UAC_TERMINAL_CS_COPY_PROTECT_CONTROL 0x01
/* 4.3.2.2 Output Terminal Descriptor */
struct
uac1_output_terminal_descriptor
{
__u8
bLength
;
/* in bytes: 9 */
__u8
bDescriptorType
;
/* CS_INTERFACE descriptor type */
__u8
bDescriptorSubtype
;
/* OUTPUT_TERMINAL descriptor subtype */
__u8
bTerminalID
;
/* Constant uniquely terminal ID */
__le16
wTerminalType
;
/* USB Audio Terminal Types */
__u8
bAssocTerminal
;
/* ID of the Input Terminal associated */
__u8
bSourceID
;
/* ID of the connected Unit or Terminal*/
__u8
iTerminal
;
}
__attribute__
((
packed
));
#define UAC_DT_OUTPUT_TERMINAL_SIZE 9
/* Terminals - 2.3 Output Terminal Types */
#define UAC_OUTPUT_TERMINAL_UNDEFINED 0x300
#define UAC_OUTPUT_TERMINAL_SPEAKER 0x301
#define UAC_OUTPUT_TERMINAL_HEADPHONES 0x302
#define UAC_OUTPUT_TERMINAL_HEAD_MOUNTED_DISPLAY_AUDIO 0x303
#define UAC_OUTPUT_TERMINAL_DESKTOP_SPEAKER 0x304
#define UAC_OUTPUT_TERMINAL_ROOM_SPEAKER 0x305
#define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER 0x306
#define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER 0x307
/* Terminals - 2.4 Bi-directional Terminal Types */
#define UAC_BIDIR_TERMINAL_UNDEFINED 0x400
#define UAC_BIDIR_TERMINAL_HANDSET 0x401
#define UAC_BIDIR_TERMINAL_HEADSET 0x402
#define UAC_BIDIR_TERMINAL_SPEAKER_PHONE 0x403
#define UAC_BIDIR_TERMINAL_ECHO_SUPPRESSING 0x404
#define UAC_BIDIR_TERMINAL_ECHO_CANCELING 0x405
/* Set bControlSize = 2 as default setting */
#define UAC_DT_FEATURE_UNIT_SIZE(ch) (7 + ((ch) + 1) * 2)
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(ch) \
struct uac_feature_unit_descriptor_##ch { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__u8 bUnitID; \
__u8 bSourceID; \
__u8 bControlSize; \
__le16 bmaControls[ch + 1]; \
__u8 iFeature; \
} __attribute__ ((packed))
/* 4.3.2.3 Mixer Unit Descriptor */
struct
uac_mixer_unit_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bUnitID
;
__u8
bNrInPins
;
__u8
baSourceID
[];
}
__attribute__
((
packed
));
static
inline
__u8
uac_mixer_unit_bNrChannels
(
struct
uac_mixer_unit_descriptor
*
desc
)
{
return
desc
->
baSourceID
[
desc
->
bNrInPins
];
}
static
inline
__u32
uac_mixer_unit_wChannelConfig
(
struct
uac_mixer_unit_descriptor
*
desc
,
int
protocol
)
{
if
(
protocol
==
UAC_VERSION_1
)
return
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
2
]
<<
8
)
|
desc
->
baSourceID
[
desc
->
bNrInPins
+
1
];
else
return
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
4
]
<<
24
)
|
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
3
]
<<
16
)
|
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
2
]
<<
8
)
|
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
1
]);
}
static
inline
__u8
uac_mixer_unit_iChannelNames
(
struct
uac_mixer_unit_descriptor
*
desc
,
int
protocol
)
{
return
(
protocol
==
UAC_VERSION_1
)
?
desc
->
baSourceID
[
desc
->
bNrInPins
+
3
]
:
desc
->
baSourceID
[
desc
->
bNrInPins
+
5
];
}
static
inline
__u8
*
uac_mixer_unit_bmControls
(
struct
uac_mixer_unit_descriptor
*
desc
,
int
protocol
)
{
switch
(
protocol
)
{
case
UAC_VERSION_1
:
return
&
desc
->
baSourceID
[
desc
->
bNrInPins
+
4
];
case
UAC_VERSION_2
:
return
&
desc
->
baSourceID
[
desc
->
bNrInPins
+
6
];
case
UAC_VERSION_3
:
return
&
desc
->
baSourceID
[
desc
->
bNrInPins
+
2
];
default:
return
NULL
;
}
}
static
inline
__u16
uac3_mixer_unit_wClusterDescrID
(
struct
uac_mixer_unit_descriptor
*
desc
)
{
return
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
1
]
<<
8
)
|
desc
->
baSourceID
[
desc
->
bNrInPins
];
}
static
inline
__u8
uac_mixer_unit_iMixer
(
struct
uac_mixer_unit_descriptor
*
desc
)
{
__u8
*
raw
=
(
__u8
*
)
desc
;
return
raw
[
desc
->
bLength
-
1
];
}
/* 4.3.2.4 Selector Unit Descriptor */
struct
uac_selector_unit_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bUintID
;
__u8
bNrInPins
;
__u8
baSourceID
[];
}
__attribute__
((
packed
));
static
inline
__u8
uac_selector_unit_iSelector
(
struct
uac_selector_unit_descriptor
*
desc
)
{
__u8
*
raw
=
(
__u8
*
)
desc
;
return
raw
[
desc
->
bLength
-
1
];
}
#if UAC_USE_FEATURE_UNIT
/* 4.3.2.5 Feature Unit Descriptor */
struct
uac_feature_unit_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bUnitID
;
__u8
bSourceID
;
__u8
bControlSize
;
__u8
bmaControls
[
0
];
/* variable length */
}
__attribute__
((
packed
));
static
inline
__u8
uac_feature_unit_iFeature
(
struct
uac_feature_unit_descriptor
*
desc
)
{
__u8
*
raw
=
(
__u8
*
)
desc
;
return
raw
[
desc
->
bLength
-
1
];
}
#endif
/* 4.3.2.6 Processing Unit Descriptors */
struct
uac_processing_unit_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bUnitID
;
__le16
wProcessType
;
__u8
bNrInPins
;
__u8
baSourceID
[];
}
__attribute__
((
packed
));
static
inline
__u8
uac_processing_unit_bNrChannels
(
struct
uac_processing_unit_descriptor
*
desc
)
{
return
desc
->
baSourceID
[
desc
->
bNrInPins
];
}
static
inline
__u32
uac_processing_unit_wChannelConfig
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
if
(
protocol
==
UAC_VERSION_1
)
return
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
2
]
<<
8
)
|
desc
->
baSourceID
[
desc
->
bNrInPins
+
1
];
else
return
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
4
]
<<
24
)
|
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
3
]
<<
16
)
|
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
2
]
<<
8
)
|
(
desc
->
baSourceID
[
desc
->
bNrInPins
+
1
]);
}
static
inline
__u8
uac_processing_unit_iChannelNames
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
return
(
protocol
==
UAC_VERSION_1
)
?
desc
->
baSourceID
[
desc
->
bNrInPins
+
3
]
:
desc
->
baSourceID
[
desc
->
bNrInPins
+
5
];
}
static
inline
__u8
uac_processing_unit_bControlSize
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
switch
(
protocol
)
{
case
UAC_VERSION_1
:
return
desc
->
baSourceID
[
desc
->
bNrInPins
+
4
];
case
UAC_VERSION_2
:
return
2
;
/* in UAC2, this value is constant */
case
UAC_VERSION_3
:
return
4
;
/* in UAC3, this value is constant */
default:
return
1
;
}
}
static
inline
__u8
*
uac_processing_unit_bmControls
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
switch
(
protocol
)
{
case
UAC_VERSION_1
:
return
&
desc
->
baSourceID
[
desc
->
bNrInPins
+
5
];
case
UAC_VERSION_2
:
return
&
desc
->
baSourceID
[
desc
->
bNrInPins
+
6
];
case
UAC_VERSION_3
:
return
&
desc
->
baSourceID
[
desc
->
bNrInPins
+
2
];
default:
return
NULL
;
}
}
static
inline
__u8
uac_processing_unit_iProcessing
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
__u8
control_size
=
uac_processing_unit_bControlSize
(
desc
,
protocol
);
switch
(
protocol
)
{
case
UAC_VERSION_1
:
case
UAC_VERSION_2
:
default:
return
*
(
uac_processing_unit_bmControls
(
desc
,
protocol
)
+
control_size
);
case
UAC_VERSION_3
:
return
0
;
/* UAC3 does not have this field */
}
}
static
inline
__u8
*
uac_processing_unit_specific
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
__u8
control_size
=
uac_processing_unit_bControlSize
(
desc
,
protocol
);
switch
(
protocol
)
{
case
UAC_VERSION_1
:
case
UAC_VERSION_2
:
default:
return
uac_processing_unit_bmControls
(
desc
,
protocol
)
+
control_size
+
1
;
case
UAC_VERSION_3
:
return
uac_processing_unit_bmControls
(
desc
,
protocol
)
+
control_size
;
}
}
/*
* Extension Unit (XU) has almost compatible layout with Processing Unit, but
* on UAC2, it has a different bmControls size (bControlSize); it's 1 byte for
* XU while 2 bytes for PU. The last iExtension field is a one-byte index as
* well as iProcessing field of PU.
*/
static
inline
__u8
uac_extension_unit_bControlSize
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
switch
(
protocol
)
{
case
UAC_VERSION_1
:
return
desc
->
baSourceID
[
desc
->
bNrInPins
+
4
];
case
UAC_VERSION_2
:
return
1
;
/* in UAC2, this value is constant */
case
UAC_VERSION_3
:
return
4
;
/* in UAC3, this value is constant */
default:
return
1
;
}
}
static
inline
__u8
uac_extension_unit_iExtension
(
struct
uac_processing_unit_descriptor
*
desc
,
int
protocol
)
{
__u8
control_size
=
uac_extension_unit_bControlSize
(
desc
,
protocol
);
switch
(
protocol
)
{
case
UAC_VERSION_1
:
case
UAC_VERSION_2
:
default:
return
*
(
uac_processing_unit_bmControls
(
desc
,
protocol
)
+
control_size
);
case
UAC_VERSION_3
:
return
0
;
/* UAC3 does not have this field */
}
}
/* 4.5.2 Class-Specific AS Interface Descriptor */
struct
uac1_as_header_descriptor
{
__u8
bLength
;
/* in bytes: 7 */
__u8
bDescriptorType
;
/* USB_DT_CS_INTERFACE */
__u8
bDescriptorSubtype
;
/* AS_GENERAL */
__u8
bTerminalLink
;
/* Terminal ID of connected Terminal */
__u8
bDelay
;
/* Delay introduced by the data path */
__le16
wFormatTag
;
/* The Audio Data Format */
}
__attribute__
((
packed
));
#define UAC_DT_AS_HEADER_SIZE 7
/* Formats - A.1.1 Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_I_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I_PCM 0x1
#define UAC_FORMAT_TYPE_I_PCM8 0x2
#define UAC_FORMAT_TYPE_I_IEEE_FLOAT 0x3
#define UAC_FORMAT_TYPE_I_ALAW 0x4
#define UAC_FORMAT_TYPE_I_MULAW 0x5
struct
uac_format_type_i_continuous_descriptor
{
__u8
bLength
;
/* in bytes: 8 + (ns * 3) */
__u8
bDescriptorType
;
/* USB_DT_CS_INTERFACE */
__u8
bDescriptorSubtype
;
/* FORMAT_TYPE */
__u8
bFormatType
;
/* FORMAT_TYPE_1 */
__u8
bNrChannels
;
/* physical channels in the stream */
__u8
bSubframeSize
;
/* */
__u8
bBitResolution
;
__u8
bSamFreqType
;
__u8
tLowerSamFreq
[
3
];
__u8
tUpperSamFreq
[
3
];
}
__attribute__
((
packed
));
#define UAC_FORMAT_TYPE_I_CONTINUOUS_DESC_SIZE 14
struct
uac_format_type_i_discrete_descriptor
{
__u8
bLength
;
/* in bytes: 8 + (ns * 3) */
__u8
bDescriptorType
;
/* USB_DT_CS_INTERFACE */
__u8
bDescriptorSubtype
;
/* FORMAT_TYPE */
__u8
bFormatType
;
/* FORMAT_TYPE_1 */
__u8
bNrChannels
;
/* physical channels in the stream */
__u8
bSubframeSize
;
/* */
__u8
bBitResolution
;
__u8
bSamFreqType
;
__u8
tSamFreq
[][
3
];
}
__attribute__
((
packed
));
#define DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(n) \
struct uac_format_type_i_discrete_descriptor_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__u8 bFormatType; \
__u8 bNrChannels; \
__u8 bSubframeSize; \
__u8 bBitResolution; \
__u8 bSamFreqType; \
__u8 tSamFreq[n][3]; \
} __attribute__ ((packed))
#define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3))
struct
uac_format_type_i_ext_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bFormatType
;
__u8
bSubslotSize
;
__u8
bBitResolution
;
__u8
bHeaderLength
;
__u8
bControlSize
;
__u8
bSideBandProtocol
;
}
__attribute__
((
packed
));
/* Formats - Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_II_MPEG 0x1001
#define UAC_FORMAT_TYPE_II_AC3 0x1002
struct
uac_format_type_ii_discrete_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bFormatType
;
__le16
wMaxBitRate
;
__le16
wSamplesPerFrame
;
__u8
bSamFreqType
;
__u8
tSamFreq
[][
3
];
}
__attribute__
((
packed
));
struct
uac_format_type_ii_ext_descriptor
{
__u8
bLength
;
__u8
bDescriptorType
;
__u8
bDescriptorSubtype
;
__u8
bFormatType
;
__le16
wMaxBitRate
;
__le16
wSamplesPerFrame
;
__u8
bHeaderLength
;
__u8
bSideBandProtocol
;
}
__attribute__
((
packed
));
/* type III */
#define UAC_FORMAT_TYPE_III_IEC1937_AC3 0x2001
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG1_LAYER1 0x2002
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_NOEXT 0x2003
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_EXT 0x2004
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER1_LS 0x2005
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER23_LS 0x2006
/* Formats - A.2 Format Type Codes */
#define UAC_FORMAT_TYPE_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I 0x1
#define UAC_FORMAT_TYPE_II 0x2
#define UAC_FORMAT_TYPE_III 0x3
#define UAC_EXT_FORMAT_TYPE_I 0x81
#define UAC_EXT_FORMAT_TYPE_II 0x82
#define UAC_EXT_FORMAT_TYPE_III 0x83
struct
uac_iso_endpoint_descriptor
{
__u8
bLength
;
/* in bytes: 7 */
__u8
bDescriptorType
;
/* USB_DT_CS_ENDPOINT */
__u8
bDescriptorSubtype
;
/* EP_GENERAL */
__u8
bmAttributes
;
__u8
bLockDelayUnits
;
__le16
wLockDelay
;
}
__attribute__
((
packed
));
#define UAC_ISO_ENDPOINT_DESC_SIZE 7
#define UAC_EP_CS_ATTR_SAMPLE_RATE 0x01
#define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02
#define UAC_EP_CS_ATTR_FILL_MAX 0x80
/* status word format (3.7.1.1) */
#define UAC1_STATUS_TYPE_ORIG_MASK 0x0f
#define UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF 0x0
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_IF 0x1
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_EP 0x2
#define UAC1_STATUS_TYPE_IRQ_PENDING (1 << 7)
#define UAC1_STATUS_TYPE_MEM_CHANGED (1 << 6)
struct
uac1_status_word
{
__u8
bStatusType
;
__u8
bOriginator
;
}
__attribute__
((
packed
));
#endif
/* _UAPI__LINUX_USB_AUDIO_H */
components/drivers/usb/usbdevice/class/audio_mic.c
0 → 100644
浏览文件 @
98b19569
/*
* Copyright (c) 2006-2019, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-09-07 flybreak the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtservice.h>
#include <rtdevice.h>
#include "drivers/usb_device.h"
#include "audio.h"
#define DBG_TAG "usbd.audio.mic"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#define RECORD_SAMPLERATE 16000
#define RECORD_CHANNEL 1
#define RESOLUTION_BITS 16
#define RESOLUTION_BYTE (RESOLUTION_BITS / 8)
#define RECORD_PER_MS_SZ ((RECORD_SAMPLERATE * RECORD_CHANNEL * RESOLUTION_BYTE) / 1000)
#define RECORD_BUFFER_SZ (RECORD_PER_MS_SZ * 20)
/* 20ms */
#if defined(RT_USBD_MIC_DEVICE_NAME)
#define MIC_DEVICE_NAME RT_USBD_MIC_DEVICE_NAME
#else
#define MIC_DEVICE_NAME "mic0"
#endif
#define EVENT_RECORD_START (1 << 0)
#define EVENT_RECORD_STOP (1 << 1)
#define EVENT_RECORD_DATA (1 << 2)
/*
* uac mic descriptor define
*/
#define UAC_CS_INTERFACE 0x24
#define UAC_CS_ENDPOINT 0x25
#define UAC_MAX_PACKET_SIZE 64
#define UAC_EP_MAX_PACKET_SIZE 32
#define UAC_CHANNEL_NUM RECORD_CHANNEL
#define UAC_INTR_NUM 1
#define UAC_CH_NUM 1
#define UAC_FORMAT_NUM 1
struct
uac_ac_descriptor
{
#ifdef RT_USB_DEVICE_COMPOSITE
struct
uiad_descriptor
iad_desc
;
#endif
struct
uinterface_descriptor
intf_desc
;
DECLARE_UAC_AC_HEADER_DESCRIPTOR
(
UAC_INTR_NUM
)
hdr_desc
;
struct
uac_input_terminal_descriptor
it_desc
;
struct
uac1_output_terminal_descriptor
ot_desc
;
#if UAC_USE_FEATURE_UNIT
DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR
(
UAC_CH_NUM
)
feature_unit_desc
;
#endif
};
struct
uac_as_descriptor
{
struct
uinterface_descriptor
intf_desc
;
struct
uac1_as_header_descriptor
hdr_desc
;
DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC
(
UAC_FORMAT_NUM
)
format_type_desc
;
struct
uendpoint_descriptor
ep_desc
;
struct
uac_iso_endpoint_descriptor
as_ep_desc
;
};
/*
* uac mic device type
*/
struct
uac_audio_mic
{
rt_device_t
dev
;
rt_event_t
event
;
rt_uint8_t
*
buffer
;
rt_uint32_t
buffer_index
;
uep_t
ep
;
};
static
struct
uac_audio_mic
mic
;
ALIGN
(
4
)
static
struct
udevice_descriptor
dev_desc
=
{
USB_DESC_LENGTH_DEVICE
,
//bLength;
USB_DESC_TYPE_DEVICE
,
//type;
USB_BCD_VERSION
,
//bcdUSB;
USB_CLASS_DEVICE
,
//bDeviceClass;
0x00
,
//bDeviceSubClass;
0x00
,
//bDeviceProtocol;
UAC_MAX_PACKET_SIZE
,
//bMaxPacketSize0;
_VENDOR_ID
,
//idVendor;
_PRODUCT_ID
,
//idProduct;
USB_BCD_DEVICE
,
//bcdDevice;
USB_STRING_MANU_INDEX
,
//iManufacturer;
USB_STRING_PRODUCT_INDEX
,
//iProduct;
USB_STRING_SERIAL_INDEX
,
//iSerialNumber;Unused.
USB_DYNAMIC
,
//bNumConfigurations;
};
//FS and HS needed
ALIGN
(
4
)
static
struct
usb_qualifier_descriptor
dev_qualifier
=
{
sizeof
(
dev_qualifier
),
//bLength
USB_DESC_TYPE_DEVICEQUALIFIER
,
//bDescriptorType
0x0200
,
//bcdUSB
USB_CLASS_AUDIO
,
//bDeviceClass
0x00
,
//bDeviceSubClass
0x00
,
//bDeviceProtocol
64
,
//bMaxPacketSize0
0x01
,
//bNumConfigurations
0
,
};
ALIGN
(
4
)
const
static
char
*
_ustring
[]
=
{
"Language"
,
"RT-Thread Team."
,
"Microphone"
,
"32021919830108"
,
"Configuration"
,
"Interface"
,
};
ALIGN
(
4
)
static
struct
uac_ac_descriptor
ac_desc
=
{
#ifdef RT_USB_DEVICE_COMPOSITE
/* Interface Association Descriptor */
{
USB_DESC_LENGTH_IAD
,
USB_DESC_TYPE_IAD
,
USB_DYNAMIC
,
0x02
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOSTREAMING
,
0x00
,
0x00
,
},
#endif
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE
,
USB_DESC_TYPE_INTERFACE
,
USB_DYNAMIC
,
0x00
,
0x00
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOCONTROL
,
0x00
,
0x00
,
},
/* Header Descriptor */
{
UAC_DT_AC_HEADER_SIZE
(
UAC_INTR_NUM
),
UAC_CS_INTERFACE
,
UAC_HEADER
,
0x0100
,
/* Version: 1.00 */
0x001E
,
/* Total length: 30 */
0x01
,
/* Total number of interfaces: 1 */
{
0x01
},
/* Interface number: 1 */
},
/* Input Terminal Descriptor */
{
UAC_DT_INPUT_TERMINAL_SIZE
,
UAC_CS_INTERFACE
,
UAC_INPUT_TERMINAL
,
0x01
,
/* Terminal ID: 1 */
0x0201
,
/* Terminal Type: Microphone (0x0201) */
0x00
,
/* Assoc Terminal: 0 */
0x01
,
/* Number Channels: 1 */
0x0000
,
/* Channel Config: 0x0000 */
0x00
,
/* Channel Names: 0 */
0x00
,
/* Terminal: 0 */
},
/* Output Terminal Descriptor */
{
UAC_DT_OUTPUT_TERMINAL_SIZE
,
UAC_CS_INTERFACE
,
UAC_OUTPUT_TERMINAL
,
0x02
,
/* Terminal ID: 2 */
0x0101
,
/* Terminal Type: USB Streaming (0x0101) */
0x00
,
/* Assoc Terminal: 0 */
0x01
,
/* Source ID: 1 */
0x00
,
/* Terminal: 0 */
},
#if UAC_USE_FEATURE_UNIT
/* Feature unit Descriptor */
{
UAC_DT_FEATURE_UNIT_SIZE
(
UAC_CH_NUM
),
UAC_CS_INTERFACE
,
UAC_FEATURE_UNIT
,
0x02
,
0x0101
,
0x00
,
0x01
,
},
#endif
};
ALIGN
(
4
)
static
struct
uinterface_descriptor
as_desc0
=
{
USB_DESC_LENGTH_INTERFACE
,
USB_DESC_TYPE_INTERFACE
,
USB_DYNAMIC
,
0x00
,
0x00
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOSTREAMING
,
0x00
,
0x00
,
};
ALIGN
(
4
)
static
struct
uac_as_descriptor
as_desc
=
{
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE
,
USB_DESC_TYPE_INTERFACE
,
USB_DYNAMIC
,
0x01
,
0x01
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOSTREAMING
,
0x00
,
0x00
,
},
/* General AS Descriptor */
{
UAC_DT_AS_HEADER_SIZE
,
UAC_CS_INTERFACE
,
UAC_AS_GENERAL
,
0x02
,
/* Terminal ID: 2 */
0x01
,
/* Interface delay in frames: 1 */
UAC_FORMAT_TYPE_I_PCM
,
},
/* Format type i Descriptor */
{
UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE
(
UAC_FORMAT_NUM
),
UAC_CS_INTERFACE
,
UAC_FORMAT_TYPE
,
UAC_FORMAT_TYPE_I
,
UAC_CHANNEL_NUM
,
2
,
/* Subframe Size: 2 */
RESOLUTION_BITS
,
0x01
,
/* Samples Frequence Type: 1 */
{
0
},
/* Samples Frequence */
},
/* Endpoint Descriptor */
{
USB_DESC_LENGTH_ENDPOINT
,
USB_DESC_TYPE_ENDPOINT
,
USB_DYNAMIC
|
USB_DIR_IN
,
USB_EP_ATTR_ISOC
,
UAC_EP_MAX_PACKET_SIZE
,
0x01
,
},
/* AS Endpoint Descriptor */
{
UAC_ISO_ENDPOINT_DESC_SIZE
,
UAC_CS_ENDPOINT
,
UAC_MS_GENERAL
,
},
};
void
mic_entry
(
void
*
parameter
)
{
struct
rt_audio_caps
caps
=
{
0
};
rt_uint32_t
e
,
index
;
mic
.
buffer
=
rt_malloc
(
RECORD_BUFFER_SZ
);
if
(
mic
.
buffer
==
RT_NULL
)
{
LOG_E
(
"malloc failed"
);
goto
__exit
;
}
mic
.
dev
=
rt_device_find
(
MIC_DEVICE_NAME
);
if
(
mic
.
dev
==
RT_NULL
)
{
LOG_E
(
"can't find device:%s"
,
MIC_DEVICE_NAME
);
goto
__exit
;
}
while
(
1
)
{
if
(
rt_event_recv
(
mic
.
event
,
EVENT_RECORD_START
,
RT_EVENT_FLAG_OR
|
RT_EVENT_FLAG_CLEAR
,
1000
,
&
e
)
!=
RT_EOK
)
{
continue
;
}
LOG_D
(
"record start"
);
rt_device_open
(
mic
.
dev
,
RT_DEVICE_OFLAG_RDONLY
);
caps
.
main_type
=
AUDIO_TYPE_INPUT
;
caps
.
sub_type
=
AUDIO_DSP_PARAM
;
caps
.
udata
.
config
.
samplerate
=
RECORD_SAMPLERATE
;
caps
.
udata
.
config
.
channels
=
RECORD_CHANNEL
;
caps
.
udata
.
config
.
samplebits
=
RESOLUTION_BITS
;
rt_device_control
(
mic
.
dev
,
AUDIO_CTL_CONFIGURE
,
&
caps
);
while
(
1
)
{
if
(
rt_event_recv
(
mic
.
event
,
EVENT_RECORD_DATA
|
EVENT_RECORD_STOP
,
RT_EVENT_FLAG_OR
|
RT_EVENT_FLAG_CLEAR
,
1000
,
&
e
)
!=
RT_EOK
)
{
continue
;
}
if
(
e
&
EVENT_RECORD_DATA
)
{
index
=
(
mic
.
buffer_index
>=
RECORD_BUFFER_SZ
/
2
)
?
0
:
(
RECORD_BUFFER_SZ
/
2
);
rt_device_read
(
mic
.
dev
,
0
,
mic
.
buffer
+
index
,
RECORD_BUFFER_SZ
/
2
);
}
else
if
(
e
&
EVENT_RECORD_STOP
)
{
break
;
}
}
LOG_D
(
"record stop"
);
rt_device_close
(
mic
.
dev
);
}
__exit:
if
(
mic
.
buffer
)
rt_free
(
mic
.
buffer
);
}
static
rt_err_t
_record_start
(
ufunction_t
func
)
{
mic
.
ep
->
request
.
buffer
=
RT_NULL
;
mic
.
ep
->
request
.
size
=
UAC_EP_MAX_PACKET_SIZE
;
mic
.
ep
->
request
.
req_type
=
UIO_REQUEST_WRITE
;
rt_usbd_io_request
(
func
->
device
,
mic
.
ep
,
&
mic
.
ep
->
request
);
rt_event_send
(
mic
.
event
,
EVENT_RECORD_START
);
return
0
;
}
static
rt_err_t
_record_stop
(
ufunction_t
func
)
{
rt_event_send
(
mic
.
event
,
EVENT_RECORD_STOP
);
return
0
;
}
static
rt_err_t
_ep_data_in_handler
(
ufunction_t
func
,
rt_size_t
size
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
LOG_D
(
"_ep_data_in_handler"
);
mic
.
ep
->
request
.
buffer
=
mic
.
buffer
+
mic
.
buffer_index
;
mic
.
ep
->
request
.
size
=
UAC_EP_MAX_PACKET_SIZE
;
mic
.
ep
->
request
.
req_type
=
UIO_REQUEST_WRITE
;
rt_usbd_io_request
(
func
->
device
,
mic
.
ep
,
&
mic
.
ep
->
request
);
mic
.
buffer_index
+=
UAC_EP_MAX_PACKET_SIZE
;
if
(
mic
.
buffer_index
>=
RECORD_BUFFER_SZ
)
{
mic
.
buffer_index
=
0
;
rt_event_send
(
mic
.
event
,
EVENT_RECORD_DATA
);
}
else
if
(
mic
.
buffer_index
==
RECORD_BUFFER_SZ
/
2
)
{
rt_event_send
(
mic
.
event
,
EVENT_RECORD_DATA
);
}
return
RT_EOK
;
}
static
rt_err_t
_interface_as_handler
(
ufunction_t
func
,
ureq_t
setup
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
RT_ASSERT
(
func
->
device
!=
RT_NULL
);
RT_ASSERT
(
setup
!=
RT_NULL
);
LOG_D
(
"_interface_as_handler"
);
if
((
setup
->
request_type
&
USB_REQ_TYPE_MASK
)
==
USB_REQ_TYPE_STANDARD
)
{
switch
(
setup
->
bRequest
)
{
case
USB_REQ_GET_INTERFACE
:
break
;
case
USB_REQ_SET_INTERFACE
:
LOG_D
(
"set interface handler"
);
if
(
setup
->
wValue
==
1
)
{
_record_start
(
func
);
}
else
if
(
setup
->
wValue
==
0
)
{
_record_stop
(
func
);
}
break
;
default:
LOG_D
(
"unknown uac request 0x%x"
,
setup
->
bRequest
);
return
-
RT_ERROR
;
}
}
return
RT_EOK
;
}
static
rt_err_t
_function_enable
(
ufunction_t
func
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
LOG_D
(
"uac function enable"
);
return
RT_EOK
;
}
static
rt_err_t
_function_disable
(
ufunction_t
func
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
LOG_D
(
"uac function disable"
);
_record_stop
(
func
);
return
RT_EOK
;
}
static
struct
ufunction_ops
ops
=
{
_function_enable
,
_function_disable
,
RT_NULL
,
};
/**
* This function will configure uac descriptor.
*
* @param comm the communication interface number.
* @param data the data interface number.
*
* @return RT_EOK on successful.
*/
static
rt_err_t
_uac_descriptor_config
(
struct
uac_ac_descriptor
*
ac
,
rt_uint8_t
cintf_nr
,
struct
uac_as_descriptor
*
as
,
rt_uint8_t
sintf_nr
)
{
ac
->
hdr_desc
.
baInterfaceNr
[
0
]
=
sintf_nr
;
#ifdef RT_USB_DEVICE_COMPOSITE
ac
->
iad_desc
.
bFirstInterface
=
cintf_nr
;
#endif
return
RT_EOK
;
}
static
rt_err_t
_uac_samplerate_config
(
struct
uac_as_descriptor
*
as
,
rt_uint32_t
samplerate
)
{
as
->
format_type_desc
.
tSamFreq
[
0
][
2
]
=
samplerate
>>
16
&
0xff
;
as
->
format_type_desc
.
tSamFreq
[
0
][
1
]
=
samplerate
>>
8
&
0xff
;
as
->
format_type_desc
.
tSamFreq
[
0
][
0
]
=
samplerate
&
0xff
;
return
RT_EOK
;
}
/**
* This function will create a uac function instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
ufunction_t
rt_usbd_function_uac_mic_create
(
udevice_t
device
)
{
ufunction_t
func
;
uintf_t
intf_ac
,
intf_as
;
ualtsetting_t
setting_as0
;
ualtsetting_t
setting_ac
,
setting_as
;
struct
uac_as_descriptor
*
as_desc_t
;
/* parameter check */
RT_ASSERT
(
device
!=
RT_NULL
);
/* set usb device string description */
rt_usbd_device_set_string
(
device
,
_ustring
);
/* create a uac function */
func
=
rt_usbd_function_new
(
device
,
&
dev_desc
,
&
ops
);
//not support HS
//rt_usbd_device_set_qualifier(device, &dev_qualifier);
/* create interface */
intf_ac
=
rt_usbd_interface_new
(
device
,
RT_NULL
);
intf_as
=
rt_usbd_interface_new
(
device
,
_interface_as_handler
);
/* create alternate setting */
setting_ac
=
rt_usbd_altsetting_new
(
sizeof
(
struct
uac_ac_descriptor
));
setting_as0
=
rt_usbd_altsetting_new
(
sizeof
(
struct
uinterface_descriptor
));
setting_as
=
rt_usbd_altsetting_new
(
sizeof
(
struct
uac_as_descriptor
));
/* config desc in alternate setting */
rt_usbd_altsetting_config_descriptor
(
setting_ac
,
&
ac_desc
,
(
rt_off_t
)
&
((
struct
uac_ac_descriptor
*
)
0
)
->
intf_desc
);
rt_usbd_altsetting_config_descriptor
(
setting_as0
,
&
as_desc0
,
0
);
rt_usbd_altsetting_config_descriptor
(
setting_as
,
&
as_desc
,
(
rt_off_t
)
&
((
struct
uac_as_descriptor
*
)
0
)
->
intf_desc
);
/* configure the uac interface descriptor */
_uac_descriptor_config
(
setting_ac
->
desc
,
intf_ac
->
intf_num
,
setting_as
->
desc
,
intf_as
->
intf_num
);
_uac_samplerate_config
(
setting_as
->
desc
,
RECORD_SAMPLERATE
);
/* create endpoint */
as_desc_t
=
(
struct
uac_as_descriptor
*
)
setting_as
->
desc
;
mic
.
ep
=
rt_usbd_endpoint_new
(
&
as_desc_t
->
ep_desc
,
_ep_data_in_handler
);
/* add the endpoint to the alternate setting */
rt_usbd_altsetting_add_endpoint
(
setting_as
,
mic
.
ep
);
/* add the alternate setting to the interface, then set default setting of the interface */
rt_usbd_interface_add_altsetting
(
intf_ac
,
setting_ac
);
rt_usbd_set_altsetting
(
intf_ac
,
0
);
rt_usbd_interface_add_altsetting
(
intf_as
,
setting_as0
);
rt_usbd_interface_add_altsetting
(
intf_as
,
setting_as
);
rt_usbd_set_altsetting
(
intf_as
,
0
);
/* add the interface to the uac function */
rt_usbd_function_add_interface
(
func
,
intf_ac
);
rt_usbd_function_add_interface
(
func
,
intf_as
);
return
func
;
}
int
audio_mic_init
(
void
)
{
rt_thread_t
mic_tid
;
mic
.
event
=
rt_event_create
(
"mic_event"
,
RT_IPC_FLAG_FIFO
);
mic_tid
=
rt_thread_create
(
"mic_thread"
,
mic_entry
,
RT_NULL
,
1024
,
5
,
10
);
if
(
mic_tid
!=
RT_NULL
)
rt_thread_startup
(
mic_tid
);
return
RT_EOK
;
}
INIT_COMPONENT_EXPORT
(
audio_mic_init
);
/*
* register uac class
*/
struct
udclass
uac_class
=
{
.
rt_usbd_function_create
=
rt_usbd_function_uac_mic_create
};
int
rt_usbd_uac_mic_class_register
(
void
)
{
rt_usbd_class_register
(
&
uac_class
);
return
0
;
}
INIT_PREV_EXPORT
(
rt_usbd_uac_mic_class_register
);
components/drivers/usb/usbdevice/class/audio_speaker.c
0 → 100644
浏览文件 @
98b19569
/*
* Copyright (c) 2006-2019, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-09-19 flybreak the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtservice.h>
#include <rtdevice.h>
#include "drivers/usb_device.h"
#include "audio.h"
#define DBG_TAG "usbd.audio.speaker"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#define AUDIO_SAMPLERATE 16000
#define AUDIO_CHANNEL 1
#define RESOLUTION_BITS 16
#define RESOLUTION_BYTE (RESOLUTION_BITS / 8)
#define AUDIO_PER_MS_SZ ((AUDIO_SAMPLERATE * AUDIO_CHANNEL * RESOLUTION_BYTE) / 1000)
#define AUDIO_BUFFER_SZ (AUDIO_PER_MS_SZ * 20)
/* 20ms */
#if defined(RT_USBD_SPEAKER_DEVICE_NAME)
#define SPEAKER_DEVICE_NAME RT_USBD_SPEAKER_DEVICE_NAME
#else
#define SPEAKER_DEVICE_NAME "sound0"
#endif
#define EVENT_AUDIO_START (1 << 0)
#define EVENT_AUDIO_STOP (1 << 1)
#define EVENT_AUDIO_DATA (1 << 2)
/*
* uac speaker descriptor define
*/
#define UAC_CS_INTERFACE 0x24
#define UAC_CS_ENDPOINT 0x25
#define UAC_MAX_PACKET_SIZE 64
#define UAC_EP_MAX_PACKET_SIZE 32
#define UAC_CHANNEL_NUM AUDIO_CHANNEL
#define UAC_INTR_NUM 1
#define UAC_CH_NUM 1
#define UAC_FORMAT_NUM 1
struct
uac_ac_descriptor
{
#ifdef RT_USB_DEVICE_COMPOSITE
struct
uiad_descriptor
iad_desc
;
#endif
struct
uinterface_descriptor
intf_desc
;
DECLARE_UAC_AC_HEADER_DESCRIPTOR
(
UAC_INTR_NUM
)
hdr_desc
;
struct
uac_input_terminal_descriptor
it_desc
;
struct
uac1_output_terminal_descriptor
ot_desc
;
#if UAC_USE_FEATURE_UNIT
DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR
(
UAC_CH_NUM
)
feature_unit_desc
;
#endif
};
struct
uac_as_descriptor
{
struct
uinterface_descriptor
intf_desc
;
struct
uac1_as_header_descriptor
hdr_desc
;
DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC
(
UAC_FORMAT_NUM
)
format_type_desc
;
struct
uendpoint_descriptor
ep_desc
;
struct
uac_iso_endpoint_descriptor
as_ep_desc
;
};
/*
* uac speaker device type
*/
struct
uac_audio_speaker
{
rt_device_t
dev
;
rt_event_t
event
;
rt_uint8_t
*
buffer
;
rt_uint32_t
buffer_index
;
uep_t
ep
;
};
static
struct
uac_audio_speaker
speaker
;
ALIGN
(
4
)
static
struct
udevice_descriptor
dev_desc
=
{
USB_DESC_LENGTH_DEVICE
,
//bLength;
USB_DESC_TYPE_DEVICE
,
//type;
USB_BCD_VERSION
,
//bcdUSB;
USB_CLASS_DEVICE
,
//bDeviceClass;
0x00
,
//bDeviceSubClass;
0x00
,
//bDeviceProtocol;
UAC_MAX_PACKET_SIZE
,
//bMaxPacketSize0;
_VENDOR_ID
,
//idVendor;
_PRODUCT_ID
,
//idProduct;
USB_BCD_DEVICE
,
//bcdDevice;
USB_STRING_MANU_INDEX
,
//iManufacturer;
USB_STRING_PRODUCT_INDEX
,
//iProduct;
USB_STRING_SERIAL_INDEX
,
//iSerialNumber;Unused.
USB_DYNAMIC
,
//bNumConfigurations;
};
//FS and HS needed
ALIGN
(
4
)
static
struct
usb_qualifier_descriptor
dev_qualifier
=
{
sizeof
(
dev_qualifier
),
//bLength
USB_DESC_TYPE_DEVICEQUALIFIER
,
//bDescriptorType
0x0200
,
//bcdUSB
USB_CLASS_AUDIO
,
//bDeviceClass
0x00
,
//bDeviceSubClass
0x00
,
//bDeviceProtocol
64
,
//bMaxPacketSize0
0x01
,
//bNumConfigurations
0
,
};
ALIGN
(
4
)
const
static
char
*
_ustring
[]
=
{
"Language"
,
"RT-Thread Team."
,
"RT-Thread Speaker"
,
"32021919830108"
,
"Configuration"
,
"Interface"
,
};
ALIGN
(
4
)
static
struct
uac_ac_descriptor
ac_desc
=
{
#ifdef RT_USB_DEVICE_COMPOSITE
/* Interface Association Descriptor */
{
USB_DESC_LENGTH_IAD
,
USB_DESC_TYPE_IAD
,
USB_DYNAMIC
,
0x02
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOSTREAMING
,
0x00
,
0x00
,
},
#endif
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE
,
USB_DESC_TYPE_INTERFACE
,
USB_DYNAMIC
,
0x00
,
0x00
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOCONTROL
,
0x00
,
0x00
,
},
/* Header Descriptor */
{
UAC_DT_AC_HEADER_SIZE
(
UAC_INTR_NUM
),
UAC_CS_INTERFACE
,
UAC_HEADER
,
0x0100
,
/* Version: 1.00 */
0x0027
,
/* Total length: 39 */
0x01
,
/* Total number of interfaces: 1 */
{
0x01
},
/* Interface number: 1 */
},
/* Input Terminal Descriptor */
{
UAC_DT_INPUT_TERMINAL_SIZE
,
UAC_CS_INTERFACE
,
UAC_INPUT_TERMINAL
,
0x01
,
/* Terminal ID: 1 */
0x0101
,
/* Terminal Type: USB Streaming (0x0101) */
0x00
,
/* Assoc Terminal: 0 */
0x01
,
/* Number Channels: 1 */
0x0000
,
/* Channel Config: 0x0000 */
0x00
,
/* Channel Names: 0 */
0x00
,
/* Terminal: 0 */
},
/* Output Terminal Descriptor */
{
UAC_DT_OUTPUT_TERMINAL_SIZE
,
UAC_CS_INTERFACE
,
UAC_OUTPUT_TERMINAL
,
0x02
,
/* Terminal ID: 2 */
0x0302
,
/* Terminal Type: Headphones (0x0302) */
0x00
,
/* Assoc Terminal: 0 */
0x01
,
/* Source ID: 1 */
0x00
,
/* Terminal: 0 */
},
#if UAC_USE_FEATURE_UNIT
/* Feature unit Descriptor */
{
UAC_DT_FEATURE_UNIT_SIZE
(
UAC_CH_NUM
),
UAC_CS_INTERFACE
,
UAC_FEATURE_UNIT
,
0x02
,
0x0101
,
0x00
,
0x01
,
},
#endif
};
ALIGN
(
4
)
static
struct
uinterface_descriptor
as_desc0
=
{
USB_DESC_LENGTH_INTERFACE
,
USB_DESC_TYPE_INTERFACE
,
USB_DYNAMIC
,
0x00
,
0x00
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOSTREAMING
,
0x00
,
0x00
,
};
ALIGN
(
4
)
static
struct
uac_as_descriptor
as_desc
=
{
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE
,
USB_DESC_TYPE_INTERFACE
,
USB_DYNAMIC
,
0x01
,
0x01
,
USB_CLASS_AUDIO
,
USB_SUBCLASS_AUDIOSTREAMING
,
0x00
,
0x00
,
},
/* General AS Descriptor */
{
UAC_DT_AS_HEADER_SIZE
,
UAC_CS_INTERFACE
,
UAC_AS_GENERAL
,
0x01
,
/* Terminal ID: 1 */
0x01
,
/* Interface delay in frames: 1 */
UAC_FORMAT_TYPE_I_PCM
,
},
/* Format type i Descriptor */
{
UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE
(
UAC_FORMAT_NUM
),
UAC_CS_INTERFACE
,
UAC_FORMAT_TYPE
,
UAC_FORMAT_TYPE_I
,
UAC_CHANNEL_NUM
,
2
,
/* Subframe Size: 2 */
RESOLUTION_BITS
,
0x01
,
/* Samples Frequence Type: 1 */
{
0
},
/* Samples Frequence */
},
/* Endpoint Descriptor */
{
USB_DESC_LENGTH_ENDPOINT
,
USB_DESC_TYPE_ENDPOINT
,
USB_DYNAMIC
|
USB_DIR_OUT
,
USB_EP_ATTR_ISOC
,
UAC_EP_MAX_PACKET_SIZE
,
0x01
,
},
/* AS Endpoint Descriptor */
{
UAC_ISO_ENDPOINT_DESC_SIZE
,
UAC_CS_ENDPOINT
,
UAC_MS_GENERAL
,
},
};
void
speaker_entry
(
void
*
parameter
)
{
struct
rt_audio_caps
caps
=
{
0
};
rt_uint32_t
e
,
index
;
speaker
.
buffer
=
rt_malloc
(
AUDIO_BUFFER_SZ
);
if
(
speaker
.
buffer
==
RT_NULL
)
{
LOG_E
(
"malloc failed"
);
goto
__exit
;
}
speaker
.
dev
=
rt_device_find
(
SPEAKER_DEVICE_NAME
);
if
(
speaker
.
dev
==
RT_NULL
)
{
LOG_E
(
"can't find device:%s"
,
SPEAKER_DEVICE_NAME
);
goto
__exit
;
}
while
(
1
)
{
if
(
rt_event_recv
(
speaker
.
event
,
EVENT_AUDIO_START
,
RT_EVENT_FLAG_OR
|
RT_EVENT_FLAG_CLEAR
,
1000
,
&
e
)
!=
RT_EOK
)
{
continue
;
}
LOG_D
(
"record start"
);
rt_device_open
(
speaker
.
dev
,
RT_DEVICE_OFLAG_WRONLY
);
caps
.
main_type
=
AUDIO_TYPE_OUTPUT
;
caps
.
sub_type
=
AUDIO_DSP_PARAM
;
caps
.
udata
.
config
.
samplerate
=
AUDIO_SAMPLERATE
;
caps
.
udata
.
config
.
channels
=
AUDIO_CHANNEL
;
caps
.
udata
.
config
.
samplebits
=
RESOLUTION_BITS
;
rt_device_control
(
speaker
.
dev
,
AUDIO_CTL_CONFIGURE
,
&
caps
);
while
(
1
)
{
if
(
rt_event_recv
(
speaker
.
event
,
EVENT_AUDIO_DATA
|
EVENT_AUDIO_STOP
,
RT_EVENT_FLAG_OR
|
RT_EVENT_FLAG_CLEAR
,
1000
,
&
e
)
!=
RT_EOK
)
{
continue
;
}
if
(
e
&
EVENT_AUDIO_DATA
)
{
index
=
(
speaker
.
buffer_index
>=
AUDIO_BUFFER_SZ
/
2
)
?
0
:
(
AUDIO_BUFFER_SZ
/
2
);
rt_device_write
(
speaker
.
dev
,
0
,
speaker
.
buffer
+
index
,
AUDIO_BUFFER_SZ
/
2
);
}
else
if
(
e
&
EVENT_AUDIO_STOP
)
{
break
;
}
}
LOG_D
(
"record stop"
);
rt_device_close
(
speaker
.
dev
);
}
__exit:
if
(
speaker
.
buffer
)
rt_free
(
speaker
.
buffer
);
}
static
rt_err_t
_audio_start
(
ufunction_t
func
)
{
speaker
.
ep
->
request
.
buffer
=
speaker
.
buffer
;
speaker
.
ep
->
request
.
size
=
UAC_EP_MAX_PACKET_SIZE
;
speaker
.
ep
->
request
.
req_type
=
UIO_REQUEST_READ_FULL
;
rt_usbd_io_request
(
func
->
device
,
speaker
.
ep
,
&
speaker
.
ep
->
request
);
rt_event_send
(
speaker
.
event
,
EVENT_AUDIO_START
);
return
0
;
}
static
rt_err_t
_audio_stop
(
ufunction_t
func
)
{
rt_event_send
(
speaker
.
event
,
EVENT_AUDIO_STOP
);
return
0
;
}
static
rt_err_t
_ep_data_handler
(
ufunction_t
func
,
rt_size_t
size
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
LOG_D
(
"_ep_data_handler"
);
speaker
.
ep
->
request
.
buffer
=
speaker
.
buffer
+
speaker
.
buffer_index
;
speaker
.
ep
->
request
.
size
=
UAC_EP_MAX_PACKET_SIZE
;
speaker
.
ep
->
request
.
req_type
=
UIO_REQUEST_READ_FULL
;
rt_usbd_io_request
(
func
->
device
,
speaker
.
ep
,
&
speaker
.
ep
->
request
);
speaker
.
buffer_index
+=
UAC_EP_MAX_PACKET_SIZE
;
if
(
speaker
.
buffer_index
>=
AUDIO_BUFFER_SZ
)
{
speaker
.
buffer_index
=
0
;
rt_event_send
(
speaker
.
event
,
EVENT_AUDIO_DATA
);
}
else
if
(
speaker
.
buffer_index
==
AUDIO_BUFFER_SZ
/
2
)
{
rt_event_send
(
speaker
.
event
,
EVENT_AUDIO_DATA
);
}
return
RT_EOK
;
}
static
rt_err_t
_interface_as_handler
(
ufunction_t
func
,
ureq_t
setup
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
RT_ASSERT
(
func
->
device
!=
RT_NULL
);
RT_ASSERT
(
setup
!=
RT_NULL
);
LOG_D
(
"_interface_as_handler"
);
if
((
setup
->
request_type
&
USB_REQ_TYPE_MASK
)
==
USB_REQ_TYPE_STANDARD
)
{
switch
(
setup
->
bRequest
)
{
case
USB_REQ_GET_INTERFACE
:
break
;
case
USB_REQ_SET_INTERFACE
:
LOG_D
(
"set interface handler"
);
if
(
setup
->
wValue
==
1
)
{
_audio_start
(
func
);
}
else
if
(
setup
->
wValue
==
0
)
{
_audio_stop
(
func
);
}
break
;
default:
LOG_D
(
"unknown uac request 0x%x"
,
setup
->
bRequest
);
return
-
RT_ERROR
;
}
}
return
RT_EOK
;
}
static
rt_err_t
_function_enable
(
ufunction_t
func
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
LOG_D
(
"uac function enable"
);
return
RT_EOK
;
}
static
rt_err_t
_function_disable
(
ufunction_t
func
)
{
RT_ASSERT
(
func
!=
RT_NULL
);
LOG_D
(
"uac function disable"
);
_audio_stop
(
func
);
return
RT_EOK
;
}
static
struct
ufunction_ops
ops
=
{
_function_enable
,
_function_disable
,
RT_NULL
,
};
/**
* This function will configure uac descriptor.
*
* @param comm the communication interface number.
* @param data the data interface number.
*
* @return RT_EOK on successful.
*/
static
rt_err_t
_uac_descriptor_config
(
struct
uac_ac_descriptor
*
ac
,
rt_uint8_t
cintf_nr
,
struct
uac_as_descriptor
*
as
,
rt_uint8_t
sintf_nr
)
{
ac
->
hdr_desc
.
baInterfaceNr
[
0
]
=
sintf_nr
;
#ifdef RT_USB_DEVICE_COMPOSITE
ac
->
iad_desc
.
bFirstInterface
=
cintf_nr
;
#endif
return
RT_EOK
;
}
static
rt_err_t
_uac_samplerate_config
(
struct
uac_as_descriptor
*
as
,
rt_uint32_t
samplerate
)
{
as
->
format_type_desc
.
tSamFreq
[
0
][
2
]
=
samplerate
>>
16
&
0xff
;
as
->
format_type_desc
.
tSamFreq
[
0
][
1
]
=
samplerate
>>
8
&
0xff
;
as
->
format_type_desc
.
tSamFreq
[
0
][
0
]
=
samplerate
&
0xff
;
return
RT_EOK
;
}
/**
* This function will create a uac function instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
ufunction_t
rt_usbd_function_uac_speaker_create
(
udevice_t
device
)
{
ufunction_t
func
;
uintf_t
intf_ac
,
intf_as
;
ualtsetting_t
setting_as0
;
ualtsetting_t
setting_ac
,
setting_as
;
struct
uac_as_descriptor
*
as_desc_t
;
/* parameter check */
RT_ASSERT
(
device
!=
RT_NULL
);
/* set usb device string description */
rt_usbd_device_set_string
(
device
,
_ustring
);
/* create a uac function */
func
=
rt_usbd_function_new
(
device
,
&
dev_desc
,
&
ops
);
//not support HS
//rt_usbd_device_set_qualifier(device, &dev_qualifier);
/* create interface */
intf_ac
=
rt_usbd_interface_new
(
device
,
RT_NULL
);
intf_as
=
rt_usbd_interface_new
(
device
,
_interface_as_handler
);
/* create alternate setting */
setting_ac
=
rt_usbd_altsetting_new
(
sizeof
(
struct
uac_ac_descriptor
));
setting_as0
=
rt_usbd_altsetting_new
(
sizeof
(
struct
uinterface_descriptor
));
setting_as
=
rt_usbd_altsetting_new
(
sizeof
(
struct
uac_as_descriptor
));
/* config desc in alternate setting */
rt_usbd_altsetting_config_descriptor
(
setting_ac
,
&
ac_desc
,
(
rt_off_t
)
&
((
struct
uac_ac_descriptor
*
)
0
)
->
intf_desc
);
rt_usbd_altsetting_config_descriptor
(
setting_as0
,
&
as_desc0
,
0
);
rt_usbd_altsetting_config_descriptor
(
setting_as
,
&
as_desc
,
(
rt_off_t
)
&
((
struct
uac_as_descriptor
*
)
0
)
->
intf_desc
);
/* configure the uac interface descriptor */
_uac_descriptor_config
(
setting_ac
->
desc
,
intf_ac
->
intf_num
,
setting_as
->
desc
,
intf_as
->
intf_num
);
_uac_samplerate_config
(
setting_as
->
desc
,
AUDIO_SAMPLERATE
);
/* create endpoint */
as_desc_t
=
(
struct
uac_as_descriptor
*
)
setting_as
->
desc
;
speaker
.
ep
=
rt_usbd_endpoint_new
(
&
as_desc_t
->
ep_desc
,
_ep_data_handler
);
/* add the endpoint to the alternate setting */
rt_usbd_altsetting_add_endpoint
(
setting_as
,
speaker
.
ep
);
/* add the alternate setting to the interface, then set default setting of the interface */
rt_usbd_interface_add_altsetting
(
intf_ac
,
setting_ac
);
rt_usbd_set_altsetting
(
intf_ac
,
0
);
rt_usbd_interface_add_altsetting
(
intf_as
,
setting_as0
);
rt_usbd_interface_add_altsetting
(
intf_as
,
setting_as
);
rt_usbd_set_altsetting
(
intf_as
,
0
);
/* add the interface to the uac function */
rt_usbd_function_add_interface
(
func
,
intf_ac
);
rt_usbd_function_add_interface
(
func
,
intf_as
);
return
func
;
}
int
audio_speaker_init
(
void
)
{
rt_thread_t
speaker_tid
;
speaker
.
event
=
rt_event_create
(
"speaker_event"
,
RT_IPC_FLAG_FIFO
);
speaker_tid
=
rt_thread_create
(
"speaker_thread"
,
speaker_entry
,
RT_NULL
,
1024
,
5
,
10
);
if
(
speaker_tid
!=
RT_NULL
)
rt_thread_startup
(
speaker_tid
);
return
RT_EOK
;
}
INIT_COMPONENT_EXPORT
(
audio_speaker_init
);
/*
* register uac class
*/
static
struct
udclass
uac_speaker_class
=
{
.
rt_usbd_function_create
=
rt_usbd_function_uac_speaker_create
};
int
rt_usbd_uac_speaker_class_register
(
void
)
{
rt_usbd_class_register
(
&
uac_speaker_class
);
return
0
;
}
INIT_PREV_EXPORT
(
rt_usbd_uac_speaker_class_register
);
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